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CT’s small solutions to climate change: creating salt marsh in Stonington

  • Environment
  • by Jan Ellen Spiegel
  • September 17, 2019
  • View as "Clean Read" "Exit Clean Read"

Avalonia Land Conservancy

The Dodge Paddock/Beal preserve after Superstorm Sandy ripped through the coastline.

Editor’s Note: This is the second of six stories exploring how Connecticut is grappling with the effects of climate change, one small solution at a time.

If you want to understand the extent and power of what sea level rise in Long Island Sound can do, have a look at the less than four acres that is the Dodge Paddock/Beal Preserve in Stonington.

If you want to understand how to adapt to sea level rise, look at the exact same land.

Well, at least sometimes it’s land.

Back around 1980, when most of the two parcels came into possession of the Avalonia Land Conservancy, which owns both now, it was a coastal meadow that required regular mowing, said Beth Sullivan, a volunteer with Avalonia.

But by the late 1990s and early 2000s — at least partly as a result of sea level rise — the property was getting so much wetter it could no longer be mowed. Phragmites, the invasive grass and bane of the shoreline, was running wild.

“There were trails that allowed people to go on a loop walk,” Sullivan said. “You couldn’t do that anymore.”

Not without waterproof boots, anyway.

All that water brought more mosquitoes – a health hazard.  But just as the Department of Energy and Environmental Protection was figuring out how to drain the water, Superstorm Sandy hit.

“Sandy in 2012 is what broke it down completely,” Sullivan said.

Avalonia Land Conservancy

Workers from DEEP had to dig a swale through the berm to release water from Superstorm Sandy.

An existing drainage pipe was destroyed, a seawall was breached, and a huge berm of sand and gravel was pushed up onto the land. DEEP had to dig a swale through the berm just to release the water.

Avalonia decided the best option would be to restore some of the land so nature could do the rest. What nature eventually did was create far more salt marsh than had existed there before – not much of a surprise given the increase in tidal flooding.

Salt marshes are nature’s way of absorbing water and shoreline changes – holding and releasing water to accommodate flooding and moving inland as areas are inundated from the sea level rise underway now.

Sullivan remembers watching the plants come in the years after Sandy dumped all that salty water. “The plants growing in were salt marsh plants,” she said.

Avalonia helped it along with assistance from Mystic Aquarium, guidance from Juliana Barrett – an educator with Sea Grant and UConn — and a couple of grants totaling about $100,000, which it matched with dollars and elbow grease.

Beginning in 2016, volunteers planted thousands of plugs of spartina marsh grass – critical to the ecosystem now loaded with salt – along with other salt-tolerant plants.

Avalonia Land Conservancy

The flooded area of the Dodge Paddock preserve in Stonington was transformed this summer into a field with a variety of native plants.

Barrett said the situation and ultimate solution at Dodge Paddock/Beal shows that sea level rise is really happening. Her recommendation: “Where possible, work with nature not against it.”

This spring, she helped Sullivan and her volunteers plant additional native plants that are now labeled so people can see what plants can withstand salt and help with future marsh restorations. They’ll also be monitoring soil data over time.

“Over these past years, watching the salt marsh migrating – it’s a cool thing,” Sullivan said. “If anybody didn’t believe in sea level rise and salt marsh migration – they could just go watch it.”

Even so – she admits people still grouse about the old walking path, now wet and muddy more days than not.

“The mud is mud because of sea level rise, water table rise, and flooding. I cannot make it not muddy where you used to walk,” Sullivan said. “It will never go back to being a ballpark and a mowed lawn.”

This story is part of Covering Climate Now, a global collaboration of more than 250 news outlets to strengthen coverage of the climate story.

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ABOUT THE AUTHOR

Jan Ellen Spiegel Jan has won awards for her reporting on energy, environment and food and agriculture. In 2013 she was the recipient of a Knight Journalism Fellowship at MIT on energy and climate. She is a former editor at The Hartford Courant, where she handled national politics including coverage of the controversial 2000 and 2004 presidential elections. As a freelance reporter, her stories have appeared in The New York Times, The Boston Globe, and elsewhere. She was an editor at the Gazette in Colorado Springs and spent more than 20 years as a TV and radio producer at CBS News and CNN in New York and in the Boston broadcast market. She graduated from the University of Michigan and attended Boston University’s graduate film program.

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